how to use children function?

I was reading the depth first search code on matlabtools. But when I tried their code, for

ns = children(adj_mat, u); where adj_mat is an adjacency matrix

matlab gave error message: Undefined function 'children' for input arguments of type 'double'.

Anybody knows what is going on?

Thanks.

[Image Analyst]

How could I? I don't know what matlabtools is. Do you have a URL? At this point all I can say is that you do not have any function or variable called children - same as what the error says.

[Wayne]

this is the URL:

http://code.google.com/p/matlabtools/source/browse/trunk/graph/dfs.m?r=121

I typed help children in my matlab,the function children does show up.

Answer 1

[the cyclist]

Are you talking about this: https://code.google.com/p/matlabtools/ ?

As it says, that code was included in PMTK: https://code.google.com/p/pmtk3/.

And even that code looks like it might not really be supported anymore.

[Wayne]

Thanks. I think you are right. But when I typed help children in my matlab (without installing PMTK),the documentation for children does show up.

[the cyclist]

What do you get from

>> which children

?

children is also a function in the Statistics Toolbox, and it expects a tree as an input.

[Wayne]

I see, thanks!